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Mar 13, 2013 · I'm looking for a C++ "equivalent" of Java ByteBuffer. I'm probably missing the obvious or just need an isolated usage example to clarify. I've looked through the iostream family & it looks li...
One more vote for std::vector. Minimal code, skips the extra copy GMan's code do: std::vector<char> buffer; static const size_t MaxBytesPerRecv = 1024; size_t bytesRead; do { const size_t oldSize = buffer.size(); buffer.resize(oldSize + MaxBytesPerRecv); bytesRead = receive(&buffer[oldSize], MaxBytesPerRecv); // pseudo, as is the case with winsock recv() functions, they get a buffer and ...
-Relative and Absolute get() & put() methods -Easier to work with than a raw byte array -Read and Write large amounts of data -Easy way to manipulate or create custom data structures Example usage scenarios -HTTP: Request & Response parsers -Packets: Parse or Create custom packets to send over the network in a quick and easy manner Looking for ByteBuffer in C?
- “If You Wish to Make An Apple Pie from Scratch,”
- From The Bottom-Up: Neo-Buffer
- A Nominal Concept: “Buffer”
- Pointers to std::byte
- Concrete Types: const_buffer and mutable_buffer
- Convenience Casts
- Defining A Concept
- Creating A Customization Point
- Another Utility: Buffers to Trivial Objects
- Our First Buffer-Algorithm: buffer_copy
In my work on dds, I’ve been reinventing many wheels, although I’vesuccessfully made use of some existing code, and drew a lot of inspiration fromothers. Amongst the libraries I’ve been working on, I eventually needed a library thatdealt with byte sequences: One of the lowest-level objects you’ll ever deal withwhile writing code. This sounds pretty...
Many of the new libraries I’ve been creating live in the neo namespace, my ownhumble attempt at building high-quality generic code upon our new-and-improvedlanguage. Amongst these is neo-buffer, my re-implementation of much of Asio’sbuffer-oriented APIs, along with several extensions and tweaks that I hope wecan find useful. These posts will also o...
To start, lets define a “buffer” to be a sized and non-owning referenceto a contiguous sequence of bytes in memory. I choose to use std::bytespecifically, because it imposes no semantics, is allowed to alias other types,and makes casts explicit. Unlike char (and variants), it does not implicitlyconvert, does not provide arithmetic operations, and h...
Let’s ask a question: What is safe to view and manipulate through aliasingpointers through std::byte? If we have an object of type T that we wish to persist by writing its objectrepresentation bytes into a stream, and then later we wish to restore it byreading those bytes from the stream into the object representation of a T,with the expectation th...
Asio defines two low-level types to represent buffers: const_buffer andmutable_buffer, and their names do just what they say on the tin: 1. const_buffer is a read-onlyview of a contiguous segment of memory. We useit as the source of data for buffer-oriented operations. 2. mutable_buffer is a writeable (and readable) reference to contiguoussegment o...
I promised that this post would focus on C++ Concepts. So far we haven’t donemuch, but we’re about to really get into it. Writing expressive generic code that can Do The Right Thing™ in the face of aninfinite space of types has been very difficult. In a world where SFINAE-abusehas been our only mechanism of controlling overload sets, code that does...
Remember our has_data_methodVery Bad Concept? It’s a hint at a more usefulconstruct trying to break out. In all of the above cases, we also asked for the .size() of the parameter.This is something that containers have in common. It’s so common, in fact, thata standard library function was added to extend support for it to C-arrays:std::size. What i...
C++20’s Ranges comes with several customization-point objects. These arespecial callable objects that make it easier to implement customization pointsthan the old method of relying on ADL or template specializations.Unfortunately, creating a customization point object can be tricky, especiallyas it sits on a boundary where current C++ implementatio...
We’re set up to create buffers from contiguous ranges of buffer_safeobjects,but what if we just want to create a buffer for a single object? We can do thatpretty easily: This is an incredibly common operation. It’s common enough to warrant a utilityfunction: Because trivial_buffer uses byte_addressof and as_buffer, it also behavescorrectly in prese...
At the beginning, I teased that we would be re-inventing std::memcpy. Well,here it comes. buffer_copy is probably the most fundamental of all buffer-orientedalgorithms, and one of the most fundamental operations in all of computing. It’ssemantically equivalent memcpy, but we can do some tricks that improve overmemcpy, including automatic bounds and...
Jul 6, 2024 · std:: std::byte is a distinct type that implements the concept of byte as specified in the C++ language definition. Like unsignedchar, it can be used to access raw memory occupied by other objects (object representation), but unlike unsignedchar, it is not a character type and is not an arithmetic type. std::byte models a mere collection of ...
ByteBuffer is a class in C++ that allows for the manipulation of raw bytes of data. It provides methods to read and write bytes, as well as methods to convert data between different byte orders. ByteBuffer is commonly used in networking applications where data needs to be serialized before transmission. Here are some code examples: 1. Creating ...
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C++ (Cpp) ByteBuffer - 30 examples found. These are the top rated real world C++ (Cpp) examples of ByteBuffer extracted from open source projects. You can rate examples to help us improve the quality of examples. void clear() mInByteBuffer = ByteBuffer(); mOutByteBuffer = ByteBuffer(); mInByteBufferPos = 0; mBytesTransferred = 0; ByteBuffer buf ...
